Amanda Bynes Dispels Rumors About Her Mental Health

For her 28th birthday, the former child star took off to sunny Los Cabos, Mexico, for a 10-day beachside getaway.

But there was nothing wild and crazy about the trip. Bynes came with her parents, lounged poolside and tweeted photos of herself looking happy and healthy.

The message was clear: Her worst days are behind her.

Now, for the first time, the actress is addressing just how she's healing from her public breakdown and subsequent hospitalization last July.

"There has been much speculation about Amanda's medical condition," her attorney Tamar Arminak tells PEOPLE exclusively. "She asked me to dispel certain rumors. For the record, Amanda does not have schizophrenia, nor has she ever been diagnosed with it."